Car-brake.



J. A. BROOKS. CAR BRAKE. APPLICATION FILED JUNE 20. i9l3.

Patented Nov. 30} 1915.

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CAR BRAKE. *APPLICATION' FILE D mu 20. 1913.

1,162,219. Patented Nov. 30, 1915.

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CAR BRAKE.

APPLICATION FILED JUNE 20. 1913.

Patented Nov. 30, 1915.

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7 JAMES A. BROOKS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE J. G. BRILL 00., OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

CAR-BRAKE.

Application filed June. 20, 1918, Serial No. 774,754.

used on what are known as stepless cars, and

alsoto provide a'brake mechanism which will allow a maximum capacity for adjustment to take up wear;

These objects are accomplished by my in- 'vention, one'embodiment of which is hereinafter set forth.

Fora more particular description of my invention, reference is to be had to the accompanying drawings, forming a part hereof, in which I Figure 1 is a side elevation of my im;

proved brake applied to a truck, the truck being shown in dotted lines. Figs. 2, 8- and 4 show a part of the mechanism in various positions of adjustment, F ig, 2 showing the part as installed on a new truck, F 1g. 3

shows a change after a certain amount of wear has been had, and Fig. 4 a stlll further changefor a larger amount of wear. Fig.

5 is a plan view of the structure shown in Fig. 1. Figs. 6, 7 and 8 show a bracket for supporting a portion of the brake gear, Fig. 6, being taken on the line 6-6 of Fig. 8 looking in the direction of the arrows, Fig. 8 being a side elevation and Fig. 7 a plan view. Figs.'9, 10 and 11 show a pivot support for a portion of the brake mechanism, the views being taken at right angles to each other. Figs. 12,- 13 and 14 area side elevation an end elevation and a plan view, respectively, of a bracket for supporting a hanger which in turn supports a brake shoe holder.

Throughout the various views of the drawings, similar reference characters designate similar parts. My improved brake mechanism 1 may be applied to any suitable truck, but is'preferably placed on a truck of the maximum traction type with large driving wheels and small trailing wheels, as indicated in dotted lines. A brake shoe 2 is adapted to bear on a large driving wheel and'this brake shoe is held by a brake. shoe head 3, both of which may be of the conventional form. Thehead Specification of Letters Patent.

Patented Nov. 30, 1915.

8 is carried by a suitable hanger 4 which is supported from a bracket 5 which is shown in detail in F igs, 12, 13 and I 14. This bracket is preferably provided with suitable horizontal webs 6, 7 and 8 and vertical webs 9 and 10. These webs 9 and 10 are projected beyond the webs 6 and 8 in both directions, as appears in Fig. 13. At one end of each of these webs 9 and 10 and of the webs 6, 7 and 8, an additional web 11 first runs vertically and then horizontally and then vertically toform a notch suitable to fit on the top chord of a truck, and at the other endof said webs 6, 9 and 10 is formed a suitable seat 12 for the upper end of the hanger 4. The support or bracket 5 is held in place by means of suitable bolts 13 or by any other suitablemeans.

. The brake shoe holder 3 is connected to a suitable brake beam 14 which also'engages a corresponding brake shoe holder at the other side of the truck, not shown. The ex posed ends of this brake beam 14 are provided with suitable trunnions 15 on each of which ispivotally'mounted a dead lever 16.

The lower end of the dead lever 16 engages i a pin 17 which may be'passed through either of two openings in a double link 18 which engages a second pin 19 mounted in a suitable bracket 20 which is fixed to the lower link 18 is provided with twoholesat each end, as shown, the holes at one end being adapted to receive. the pin 17 and the holes at the other end the pin 19. i

chord of one side frame, of the truck. The

The upper end of the lever 16 carries a suitable pin 21 whichis adapted to enter link 22, and the other end of this link is similarly divided and provided with two either of two holes in the divided end of a holes either of which may receive a pin23 mounted in. a live lever 24. It also has two holes at its upper end. The lever 24 is fulcrumed at 25* on a'trunnion corresponding to the trunnion 15which is carried in a suitable bracket 26 which is fixed to a". brake beam 27. The brake beam 27 is fixed to a brake shoe holder 28 that carries a brake shoe 29 which is adapted to engage the smaller of the wheels at one side of the truck. It will be understood that the corresponding mechanism is the same on the other side of the truck, so that a'description of one will answer for both. The lower end of the lever 24 carries a suitable trunbrake actuating mechanism may be attached.

brake beam. It will be noted that the end which is bifurcated is not straightbut is bent as shown at Fig. 7 so as to clear the wheel, and yet be as close'to the wheel as possible, so as notto interfere with a car body during the radiation of the truck when taking a curve. This bracket 32 is further reinforced by a suitable hanger or strap 31 the upper end of which is secured by a suitable bolt 35 to the top chord of the truck and the lower end by a suitable bolt passing into the bracket 32. The open ends of the bracket 32 are preferably connected by suitable bolts after the brake beam 27 is in place.

I The brackets 20 and 32 may be varied in shape, but they are preferably made as shown, as this structure is concise, practical and sufiicient for braking purposes, yet does not in any way interfere with the radiation of the truck, as above pointed out.

c When my improved brake mechanism is constructed, as shown, and power is applied to the equalizing bar 31 in the conventional manner, this power is transmitted through the trunnion 30 to the lever 24:. The lever 24 transmits some of this power to the trunnion 25 and thence to the brake beam 27 by way of the bracket 26, and from thence to the brake shoe holders 28 and from there to the brake shoes 29. ,The balance ofthis power is transmitted to the pin 23'and from thence to the links 22, the pin 21, the lever 16 and trunnion 15, and from thence to the brake shoe holders 3 and brake shoes 2, the portion of pressure applied to each set of wheels will depend upon 3 the distances from the pivot 30 to the pivots 25 and 23 and the pivot 15 from the pivots 17 and 21. A release of the pressure on the equalizing bar 31 releases the brake mechanism in the conventional manner.. From time to time as wear occurs, one or more of the pivots17,21, 23 and 25 may be shifted, as indicated-in Figs. 1, 2, 3 and 4. By shifting asabove indicated, a very large amount of adjustment may be had which is ample. to take up all Wear that may occur. While I have shown and described one embodiment of my invention, it is obvious that it is notrestricted thereto,-but is broad enough to cover all structures that come withinthe scope of the annexed claims.

3 hat I'claim is:

1. In a device of the class described, a brake shoe holder. and means for supporting the same from the top chord of the brake frame, a dead lever pivotally connected to said brake shoe holder, a link and means for connecting the same to the truck frame and to the bottom of said dead lever, a second link connected to the top of said dead lever, a live lever also connected at its top to said last mentioned link, a brake shoe holder, a brake beam, means for supporting said brake beam so that the same may slide, and means for connecting said live lever with said brake beam and an equalizing bar adapted to actuate said live lever, said live and dead levers being outside the wheel base.

2. In a device of the class described, a dead lever and a live lever and a link connecting the same, a brake shoe holder and means for connecting said dead lever with the same, a second brake shoe holder and means for connecting said live lever with the same, means for connecting the bottom of said dead lever with the truck frame and means for connecting said live lever with the brake actuating mechanism, and a slide for supporting said second brake shoe holder, said live and dead levers being placed outside the wheel base.

3. In a device of the class described, a bracket for supporting a slidably mounted brake beam having a part adapted to fit on a crossing and another part adapted to support the said brake beam, said brake beam supporting part being curved so as to clear a car body carried by the truck to which the brake is attached.

4:. In a device of the class described, a bracket for supporting a slidably mounted brake beam, the same having a part adapted to lit on a crossing and the other end bifurcated and open and curved so as to clear the wheel.

In a device of the class described, a

bracket for supporting a slidably mounted brake beam, the same having a part adapted to fit on a crossing and the other end bifurcated and open and curved so as to clear the wheel and a reinforcing member for said bracket.

6. In a device of the class described, a bracket for supporting a slidably mounted brake beam, the same having a part adapted to fit on a crossing and the other end bifurcated and open and curved so as to clear the wheel, and means adapted to connect the open ends of said bracket after the brake beam is applied.

Signed at the city of Philadelphia, county of Philadelphia, and State of Pennsylvania, this 14th day of June, 1913.

. JAMES A. BROOKS.

Witnesses:

HENRY C. ESLING, H. F. MoKrLLrP.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, 10.0. 

